upstream/ipython Files · IPython/core/magics/__init__.py

%time magic displays output even when code ends in semicolon (#13841)...

%time magic displays output even when code ends in semicolon (#13841) After the magic is evaluated and the result is calculated, the modification tests whether the evaluated magic was _time_ and whether semicolon is the final character. The result is killed if both things happen. My choice would be to remove the _time_ test, so a semicolon would prevent the print of the output of any magic, but this is only a suggestion I keep open. I did not write any automated test, but I can do that once (and if) the solution is accepted. [#13837](https://github.com/ipython/ipython/issues/13837) points to [#10227](https://github.com/ipython/ipython/issues/10227) (_Cell magic result in printing the last evaluated line even if followed by semicolon_). There, somebody says that ';' may be a meaningful character because we could have a C++ expression, for instance. The IPython repository says the documentation for other languages is in Jupyter. I ran Jupyter on my browser with C++ and saw that a semicolon after the last statement prevents the output to be printed (a semicolon between 2 statements in a cell seems to be necessary, though). See attached file for simple examples. Therefore, it seems that the semicolon at the end in C++ already behaves the same way that in Python and is not required by the interpreter. ![IPython_Cpp](https://user-images.githubusercontent.com/5789832/203915670-513514d6-70a4-4efa-b4f4-9a8293d5a1ff.png)

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        Fernando Perez
    
Create new core.magics package and start populating with history.

              r6956
            
      """Implementation of all the magic functions built into IPython.

      """

      #-----------------------------------------------------------------------------

        Fernando Perez
    
Create decorators for standalone magic functions, as per review.x

              r6972
            
      #  Copyright (c) 2012 The IPython Development Team.

        Fernando Perez
    
Create new core.magics package and start populating with history.

              r6956
            
      #

      #  Distributed under the terms of the Modified BSD License.

      #

      #  The full license is in the file COPYING.txt, distributed with this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Imports

      #-----------------------------------------------------------------------------

        Fernando Perez
    
Move UserMagics to core.magics

              r6957
            
        Fernando Perez
    
Renamed @register_magics to @magics_class to avoid confusion....

              r6973
            
      from ..magic import Magics, magics_class

        Fernando Perez
    
Create core.magics.auto according to new API.

              r6964
            
      from .auto import AutoMagics

        Matthias Bussonnier
    
Load the asycn ext only on 3.5+

              r24467
            
      from .basic import BasicMagics, AsyncMagics

        Fernando Perez
    
Create core.magics.code according to new API.

              r6960
            
      from .code import CodeMagics, MacroToEdit

        Fernando Perez
    
Create core.magics.config according to new API.

              r6961
            
      from .config import ConfigMagics

        MinRK
    
add %%javascript, %%svg, and %%latex display magics...

              r7946
            
      from .display import DisplayMagics

        Fernando Perez
    
Create core.magics.execution according to new API.

              r6963
            
      from .execution import ExecutionMagics

        Fernando Perez
    
Create core.magics.extension according to new API.

              r6967
            
      from .extension import ExtensionMagics

        Fernando Perez
    
Create core.magics.code according to new API.

              r6960
            
      from .history import HistoryMagics

        Fernando Perez
    
Create core.magics.logging according to new API.

              r6966
            
      from .logging import LoggingMagics

        Fernando Perez
    
Create core.magics.namespace according to new API.

              r6962
            
      from .namespace import NamespaceMagics

        Fernando Perez
    
Create core.magics.osm according to new API.

              r6965
            
      from .osm import OSMagics

        Jake VanderPlas
    
ENH: add pip and conda magics

              r24880
            
      from .packaging import PackagingMagics

        Fernando Perez
    
Create core.magics.pylab according to new API.

              r6968
            
      from .pylab import PylabMagics

        MinRK
    
add script magics...

              r7299
            
      from .script import ScriptMagics

        Fernando Perez
    
Move UserMagics to core.magics

              r6957
            
      #-----------------------------------------------------------------------------

      # Magic implementation classes

      #-----------------------------------------------------------------------------

        Fernando Perez
    
Renamed @register_magics to @magics_class to avoid confusion....

              r6973
            
      @magics_class

        Fernando Perez
    
Move UserMagics to core.magics

              r6957
            
      class UserMagics(Magics):

          """Placeholder for user-defined magics to be added at runtime.

          All magics are eventually merged into a single namespace at runtime, but we

          use this class to isolate the magics defined dynamically by the user into

          their own class.

          """

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Fernando Perez Create new core.magics package and start populating with history.	r6956	"""Implementation of all the magic functions built into IPython.
		"""
		#-----------------------------------------------------------------------------
Fernando Perez Create decorators for standalone magic functions, as per review.x	r6972	# Copyright (c) 2012 The IPython Development Team.
Fernando Perez Create new core.magics package and start populating with history.	r6956	#
		# Distributed under the terms of the Modified BSD License.
		#
		# The full license is in the file COPYING.txt, distributed with this software.
		#-----------------------------------------------------------------------------

		#-----------------------------------------------------------------------------
		# Imports
		#-----------------------------------------------------------------------------
Fernando Perez Move UserMagics to core.magics	r6957
Fernando Perez Renamed @register_magics to @magics_class to avoid confusion....	r6973	from ..magic import Magics, magics_class
Fernando Perez Create core.magics.auto according to new API.	r6964	from .auto import AutoMagics
Matthias Bussonnier Load the asycn ext only on 3.5+	r24467	from .basic import BasicMagics, AsyncMagics
Fernando Perez Create core.magics.code according to new API.	r6960	from .code import CodeMagics, MacroToEdit
Fernando Perez Create core.magics.config according to new API.	r6961	from .config import ConfigMagics
MinRK add %%javascript, %%svg, and %%latex display magics...	r7946	from .display import DisplayMagics
Fernando Perez Create core.magics.execution according to new API.	r6963	from .execution import ExecutionMagics
Fernando Perez Create core.magics.extension according to new API.	r6967	from .extension import ExtensionMagics
Fernando Perez Create core.magics.code according to new API.	r6960	from .history import HistoryMagics
Fernando Perez Create core.magics.logging according to new API.	r6966	from .logging import LoggingMagics
Fernando Perez Create core.magics.namespace according to new API.	r6962	from .namespace import NamespaceMagics
Fernando Perez Create core.magics.osm according to new API.	r6965	from .osm import OSMagics
Jake VanderPlas ENH: add pip and conda magics	r24880	from .packaging import PackagingMagics
Fernando Perez Create core.magics.pylab according to new API.	r6968	from .pylab import PylabMagics
MinRK add script magics...	r7299	from .script import ScriptMagics
Fernando Perez Move UserMagics to core.magics	r6957
		#-----------------------------------------------------------------------------
		# Magic implementation classes
		#-----------------------------------------------------------------------------

Fernando Perez Renamed @register_magics to @magics_class to avoid confusion....	r6973	@magics_class
Fernando Perez Move UserMagics to core.magics	r6957	class UserMagics(Magics):
		"""Placeholder for user-defined magics to be added at runtime.

		All magics are eventually merged into a single namespace at runtime, but we
		use this class to isolate the magics defined dynamically by the user into
		their own class.
		"""